It’s time to renew your Do Not Call listing and it’s even more important than renewing that library book which you lost but don’t want to pay an overdue fine for. According to Yahoo! News, Do Not Call listings aren’t forever
Numbers placed on the registry, begun in June 2003, are valid for five years. For the millions of people who signed onto the list in its early days, their numbers will automatically drop off beginning next June if they do not enroll again.
Just jump over to the national Do Not Call registry and sign up again. Quick and (relatively) painless. They even explicitly allow cell phone numbers.